
The FMSS Moisture Sensor provides precise measurements of oil temperature and relative humidity, allowing for direct assessment of water saturation level.
Product Features:
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FMSS Moisture Sensor, the perfect tool for measuring oil temperature
Excessive water content in hydraulic fluids and lubricants can negatively impact their properties, leading to system malfunctions, operational disruptions, and damage.
The FMSS Moisture Sensor provides precise measurements of oil temperature and relative humidity, allowing for direct assessment of water saturation level. A reading of 0% indicates completely dry oil, while a reading of 100% indicates that the oil is fully saturated with water. Any additional water will appear as free water.
The FMSS is designed to respond rapidly to changes in temperature and relative humidity. It can be mounted either on the pressure line or on the reservoir . The measured values can be continuously recorded and retrieved through a serial interface or two 4 - 20 mA current outputs.
Accessories available for the moisture and temperature sensor
- Universal Power Supply - FMSA01S0 | 04.006.00190
- Data cable for computer connection - FMSA04S0 | 04.006.00191
- Adapter USB - RS232 serial - FMSA05S0 | 04.006.00194
- Data cable with open ends - FMSA03S0 | 04.006.00192
- Sensor connector - FMSA02S0 | 04.006.00193
- Sensor adaptor block for pipe installation - FMSA06S0 | 04.006.00375
MAX OPERATING PRESSURE: 50 bar
FLUID CONNECTIONS: G 3/4”
ELECTRICAL CONNECTION: M12x1 - 8 pole
MATERIALS: aluminium, HNBR, polyurethane and epoxy resin, chemical nickel / gold, soldering tin, aluminum oxide, glass
PROTECTION CLASS: IP67
ANALOG OUTPUT: 4…20 mA
TEMPERATURE RANGE: -20 °C +120 °C
FLUID COMPATIBILITY: mineral oils (H, HH, HM, HL, HV, HLP, HLPD, HVLP), synthetic esters (HETG, HEPG, HEES, HEPR), polyalkylenglycols (PAG), zinc and ash-free oils (ZAF), polyalphaolefins (PAO)

If you have any questions about this product, please don't hesitate to reach out to us at 01584 876 033. Our team is ready to assist you with any questions you may have.
General delivery information
Thank you for visiting and shopping at www.flowfitonline.com. Below are the terms and conditions for the Shipping Policy for Harrier Fluid Power Ltd T/A Flowfit.
Orders are processed and shipped during standard working hours (08:30–17:00 BST), Monday to Friday (excluding Bank Holidays). All orders placed before 4pm Monday to Thursday and 3pm on Friday are processed and despatched on the same business day.
If we are experiencing a high volume of orders, shipments may be delayed by 1–2 days. Please allow additional days in transit for delivery. If there will be a significant delay in shipment of your order, we will contact you via email or telephone.
United Kingdom delivery rates & estimates
| Service | Price | Terms |
|---|---|---|
| FREE Delivery | FREE | Free UK delivery is available for orders over £99.99+ VAT. Delivered by close of business next working day. |
| Express Delivery | £9.99 + VAT | UK Mainland delivery for orders under £99.99 + VAT. Delivered by close of business next working day. |
| Express 9am | £42.95 + VAT | Delivered by 9am next working day. |
| Express 12pm | £20.95 + VAT | Delivered by 12pm next working day. |
| Channel Islands | ||
| Standard Delivery | £20.95 + VAT | Delivery in 2–3 working days. |
| UK Highlands & Isles | ||
| Order value below £99.99 + VAT | £31.95 + VAT | Delivery in 2–3 working days. |
| Order value over £99.99 + VAT | £28.95 + VAT | Delivery in 2–3 working days. |
* Overnight delivery is only available for certain delivery addresses within the United Kingdom. Please contact us beforehand to confirm eligibility.
Email sales@flowfitonline.com or call 01584 876 033.
Collection: Customers are welcome to arrange collection using a courier of their choosing, or collect in person from our depot in Ludlow, Shropshire. Please advise us in advance so we can ensure your order is complete before collection.
International delivery rates & estimates
Shipping charges depend on weight and destination country and are calculated and displayed at checkout. Orders for delivery within the EU typically arrive on a 2–5 day service (depending on the destination). Shipments outside the EU typically arrive on a 3–7 day service (depending on the destination).
Please contact our Sales team for accurate delivery times. If your parcel has not arrived within the expected timeframe, please get in touch. Please ensure the shipping address entered at checkout is correct; we are not responsible for incorrect or undeliverable addresses.
Customs, duties and taxes
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Shipment confirmation & order tracking
You will receive a Shipment Confirmation email once your order has shipped, containing your tracking number(s). Tracking will be active within 24 hours.
Working closely with top carrier experts
We use some of the top carrier companies in the world, although you can also use your own carrier to collect your order. All deliveries require a signature on delivery. Below are our main carrier companies.

Damages
Harrier Fluid Power Ltd T/A Flowfit is not liable for products damaged or lost during shipping. If you receive your order damaged, please contact us to file a claim. Please save all packaging materials and damaged goods before filing a claim.
Returns policy
Our Return & Refund Policy provides detailed information about options and procedures for returning your order.





